Eobebt t



(No Model.)

R. T. MURPHY.

SASH FASTBNER. No. 299,246.3 y Patented May 27, 1884.

HIIMHH" JINI,

v ATTORNEY twice.

- rieur i ROBERT 'F-MRPIIY, OF VESTMINSTER, SOUTH CAROLINA.

SPECIFICATION forming part of Letters Patent No. 299,246, dated May 27,18841.

Application filed March 12, 1884. (No model.)

To all whom t may concern.;

Beit known that I, ROBERT T. MURPHY, of Vestminstcr, in the county ofOconee and State of South Carolina, have invented certain new and usefulImprovements in Sash Locks and Holders; and I do hereby declare that thefollowing is a full, clear, and exact description of the invention,which will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and tothe letters of reference marked thereon, which form part of thisspecification.

This invention relates to automatic devices for locking the sashes ofwindows when closed, and also operating to catch and maintain the sameat intermediate points when opened, in such manner that they cannot bemoved in either direction until operated upon.

It has for its object'to supply a device so simplified in form andconstruction that its' cost of manufaetureis reduced to a minimum,thereby relieving a long-felt want in this class of inventions.

The invention consists in the form and construction of the devices,together with their combination one with the other, substantially aswill hereinafter appear and be claimed.

Referring to the annexed sheet of drawings, Figure l represents avertical front elevation of a window-sash, partly broken away, in whichmy improvement is embodied. Fig. 2 is a vertical sectional elevationthereof on the line w ar. Figs. 3, 4, and 5 represent, respectively,detail views of the upper and lower buttons separately and combined, tomore clearly show their construction and operation.

Reference being had to the several parts by the letters marked thereon,A represents the lower sash of a window, C the frame.

Attached to the inner side of the frame, on a common pivot, are twoswinging buttons, a b, their point of attachment to the frame being atsuch Va height or elevation as-to bring the top edge of the upperbutton, c, on a line with the upper edge of the lower sash when saidbutton is swung up or elevated. Such button is slightly the heaviest.Both havev a shank portion, a c, in which the hole is made by which theyare pivoted to a pin or B the upper one, and

screw in the frame. The hole cin the upper one is elongated, as shown,for the purpose hereinafter described. The shank portion c of the lowerbutton, b, is of elliptical contour, so as to permit the projectingridge or shoulder c, formed with button c, to move or turn against itsedge, in order that such lower button may be thrown out from the sashwhen button c is turned upward.

C represents cleats on the sash, which are at such distances apart as tocause, when the sash has been partly opened, a button to become engagedtherewith upon the exertion of a force in either direction. y

c is a pin in the frame, which prevents the lower button from iiying outtoo far when the weight of the upper one is relieved from it.

The operation is as follows: To raise the sash, turn the button c upwardand let it rest against the stile. The moment the lower button, b, isrelieved of the weight of citswings, by gravity, away from the sash,thus unlocking it.' The sash is then raised to the desired elevation,the button a meanwhile yielding to each cleat that passes it until thedesired height has been attained. When the elevating force .is released,button a, having slipped under a cleat, locks the sash. The weight ofthe sash on a, which, as will now be understood, is resting by itsshoulder on the upper end of the shank of b, forces button b backagainst the sash, immediately over a cleat, thereby preventing said sashfrom being forced up, in like manner as button c prevents itfrom beinglowered. When desired to lower the sash, button a is swung outward andallowed to drop against b, to hold -it against the sash immediately overa cleat, thus securely locking the sash when down.

It will be seen that by providing the shank of the upper button with theelongated hole the shoulder on said button is more free to be passedaround the edge of the shank of the lower one, which would not be thecase if such hole were not elongated, as the button c could not beturned upward against the sash without turning b with it. In such latterinstance the devices would not prevent movement 0f the sash in bothdirections, but would only serve in one way. Neither in this latter casewould the devices be as near in approach to IOO automatic action as inthe present instance, for

- they would have to be turned up or down with one hand simultaneouslywith the action of opening or closing the sashwith the other, thusnecessitating the use of both hanjds'at once. The portion of the shankof b that eX- tends from its point of pivot is of greater length thanthe portions at the side of such pivotal point, thus forming, as itwere, a lever of said button, such portion of greatest length beyond thepivot being the shorter arm and its remaining portion of length beingthe longer; The power applied to it outward and downward in a lineperpendicular thereto, through the medium of a, tends to throw the endof its longest arm against the sash.

I am aware that it is not new to provide window-sashes with cleats whichare engaged by gravitating latches or buttons placed upon the frame, orvice versa. l

I am further aware that varied forms of such gravitating latches havebeen heretofore employed, by which the sashes are maintained at anyelevation to which they may be drawn,

and securely locked by the same when closed;

button b, formed with the elliptical shank, on

which the shoulder c turns and rests, each of said buttons being on apivot in the frame that is common to both.l

In testimony that I claim the foregoing as my own I affix my signaturein presence of two witnesses.

ROBT. T. MURPHY.

Witnesses:

R. F. WHITE,

H. B. ZIMMERMAN.

